biopsy of stomach

例句：

1. 1. The doctor performed a biopsy to determine the cause of the patient's illness.
   医生进行了活检以确定病人的疾病原因。
2. 2. During the surgery, the surgeon removed a small sample of tissue for histology analysis.
   在手术期间，外科医生取了一小份组织样本进行组织学分析。
3. 3. After the procedure, the pathologist reviewed the results and recommended further tests.
   手术后，病理学家审查了结果并建议进一步的测试。